#include <vector>
#include <limits>
#include <algorithm>
#include <bits/stdc++.h>

int main() {
    std::vector<float> arr{3,2,4};  //

    std::sort(arr.begin(), arr.end(), std::less<float>());  //  l -> 

    for (auto val : arr)
    {
        /* code */
        std::cout << val << ", ";
    }
    std::cout << std::endl;
    return 0;
}
